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Document type:
Zeitschriftenaufsatz 
Author(s):
B̈oni, P.; Endoh, Y.; Graf, H.A.; Hennion, M.; Martinez, J.L.; Shirane, G. 
Title:
Dipolar Anisotropy of Spinwaves in the Isotropic Ferromagnets {{EuS}} and {{Pd2 MnSn}} 
Abstract:
The spin excitations in the model Heisenberg ferromagnets EuS and Pd2MnSn have been investigated below Tc using polarized-neutron scattering. In EuS the spin waves with transverse polarization with respect to q (8 Slq) renormalize near Tc as expected according to dynamical scaling theory, and the excitations have a gap with A 20.040 meV. In contrast, the longitudinal spin waves (8 S IIq) are possibly damped. These observations are clearly related to the strong dipolar anisotropy that has already...    »
 
Journal title:
Physica B: Condensed Matter 
Year:
1995 
Journal volume:
213-214 
Month:
aug 
Pages contribution:
303 
Language:
en 
Print-ISSN:
09214526